Genesis 32:6-8

And the messengers returned to Jacob, saying, “We came to your brother Esau, and he is coming to meet you, and there are four hundred men with him.” Then Jacob was greatly afraid and distressed. He divided the people who were with him, and the flocks and herds and camels, into two camps, thinking, “If Esau comes to the one camp and attacks it, then the camp that is left will escape.”